*{
    margin: 0;
    padding: 0;

}
.music__head{
    position: relative;
    height: 303px;
    overflow: auto;/* 子容器存在margin-top的时候会把父容器一起带下来 */
}
.music__head .bg{
    width: 100%;
    height: 303px;
    background-image: url(https://upload.wikimedia.org/wikipedia/zh/7/7d/Won%E2%80%99t_Cry_%28Jay_Chou_with_Mayday_Ashin%29.jpg);
    background-size: 100% 100%;
    filter: blur(10px);
    position: absolute;
    z-index: -1; 
}
.music__head-title {
    margin: 45px 0;
    color: #fff;
    padding: 0 40px;
}
.back {
    float: left;
}
.title {
    text-align: center;
    font-size: 12px;
}
.music__body {
    width: 100%;
    height: calc(100vh - 130px);/* calc计算高度 */
    position: absolute;/* 使用定位脱离文档流 */
    top: 130px;
    background-color: #fff;
    border-top-right-radius: 32px;
    border-top-left-radius: 32px;
}
.body-pic {
    width: 257px;
    height: 283px;
    overflow: hidden;
    /* 水平垂直居中 */
    display: flex;
    justify-content: center;
    align-items: center;

    border-radius: 40px;
    position: absolute;
    left: 50%;/*父容器为标准*/
    transform: translateX(-50%);/*自己为标准*/
    top: -39px;
    box-shadow: 0 0 10px red;
}
.body-pic img {
    height: 100%;

}
.body-desc {
    margin-top: 280px;
    text-align: center;
}